Chair.



C. H. HILL.

CHAIR.

APPLICATION FILED NOV- 8. 1912.

1 1 87,?3%. Patented J 11110 20, 1916.

w. -WOM'. flaw IINTTFAD s'ra'ras Parana orrrca.

CALVIN H. HILL, OF OAK PARK, ILLINOIS, ASSIGNOR TO HEYJVOOID BROTHERS AND WAKEFIELD COMPANY, OF GARDNER, MASSACHUSETTS, A. CORPORATION OF NEW JERSEY.

weaver.

CHAIR.

Patented June 20, 1916.

Application filed November 8, 1912. Serial No. 730,160.

To all whom it may concern:

Be it known that I, CALVIN H. HILL, a citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Chairs, of which the following, together with the accompanying drawing, is a specification.

My invention relates to chairs and more particularly to that class of chairs adapted for use in theaters, schoolrooms, lecture halls and the like where large numbers of chairs are placed closely together.

In such places as those referred to, the chairs are usually fastened to the floor, but whether fastened to the floor or not, it is almost always desirable that the seats tip up in order that people may more conveniently pass and also in order that the floor under the chairs may be more accessible while it is being cleaned. It is often desirable to remove a seat from the chair frame, particularly where the seat is an upholstered one which is to be cleaned. If the seat is easily detached, it may be cleaned in some place, as out of doors, where the dust and dirt will be less objectionable than in the room where the chair is used.

With this in view, one object of the invention is due to provide a chair so constructed that the seat may not only be tipped up toward the back of the chair, but may also be easily and quickly removed from the chair frame when desired and without first loosening any fastenings whatever.

Another object of the invention is to provide a chair with a removable seat, the seat being locked to the chair frame in its lowermost position and also in its uppermost position, but being free to be withdrawn or detached from the chair frame when turned into its uppermost position, raised vertically a short distance and then tilted forwardly into an intermediate position.

Further objects and advantages will appear from the following description of one embodiment of the invention, taken in connection with the accompanying drawing in which- Figure 1 is a perspective view of a chair embodying the features of my invention; Fig. 2 is a vertical sectional view showing the normal position of the seat in dotted lines and also showing means secured to the chair frame for supporting the seat in the peculiar manner already indicated; Fig. 3 1s an enlarged view of the means secured to the frame for supporting the seat, a portion of cooperating means secured to the seat being also shown in section in its normal position; Fig. 4 is a view similar to Fig. 8, but showing by full lines the position of the cooperating means secured to the seat when the seat is tipped up and by broken lines the position of this means when the seat is in proper position to be withdrawn from the chair frame; Fig. 5 is a perspective View of one of the rear corners of the seat with the supporting means secured thereto which cooperates with the supporting means secured to the frame; and Fig. 6 is a sectional View of both supporting means referred to with enough of the seatand chair frame to show the relations of these parts, the seat being in its normal position.

Similar reference characters refer to similar parts in the different figures.

The chair frame includes two sides 1, each having legs 2 and supporting at the top an arm piece 3. The sides 1 are secured together by the back 4 which is attached at each side to one of the sides 1 by an angle iron 5.

On the inner face of each of the sides 1 and at the level of the axis about which the seat is pivoted is secured a metallic plate 6, the edges of these plates being riveted or bolted against the sides but the central portions of the plates being stamped or molded inwardly ashort distance toward the chair seat in order to provide spaces in the outer faces of the plates for bolt and rivet heads.

Secured to the rear, portion of each side edge of the seat is a peculiarly shaped piece of sheet metal 7, cut or stamped and bent as most clearly shown in Fig. 5. The main or body portion 8 of this piece of metal lies flat against the side edge of the seat and has its lower edge 9 bent around onto the bottom of the seat and secured thereto to provide additional strength. The upper edge is bent outwardly from the seat and at a right angle thereto to form a narrow flange 10. The central portion of the outer edge of this flange 10 is bent downwardly to form a fiat ear 11 parallel to the body portion 8 and spaced a short distance therefrom. This ear 8 has a slot 12 extending inwardly from its rear edge and parallel to the general plane of the seat. The upper portion of the indicated in full lines in Fig. 4. The seat rear end edge of the body portion 8 is bent outwardly 'to form a small stop 13 lying against and at a right angle to the rear end of the flange 10.

r A small plate 14 has its front and lower edges bent at right angles thereto and secured to the inner face of the plate 6, that is, to the face of the plate 6 toward the chair seat, the edges of this small plate 14 holding it spaced a short distance from the plate 6 and parallel thereto. The space between these two plates is, of course, open at the top and to the rear. A pin 15 joins the plate 6 to a point of the plate 14 approximately near its center, this pin 15 acting as a pivot upon which the seat may be rotated or tipped up and down. It should be understood" that the seat supporting means being front and bottomfl Secured between these two plates, mainly by asmall bolt 17 is a block 18 of felt, or other resilient material,

extending slightly beyond theffront and lower edges of the plate 16-and serving-as a stop for the seat to strike against in either of its extreme positions. 7

i The distances betweenthe plates 6 and between the ears .1-1 are-so related that when a detachedseat is held at a suitable angle intermediate its two extreme positions, as indic'ated by-the broken lines in'Fig. 4, the two ears '11 will slide readily into thetwo spaces between the plates l6'and 14 until these ears strike the pivots 15. The stops 13 will then have passed below the lower edges of the plates 14 and theseat may thenbe tipped to its extreme uppermost position, oruntil the .flanges, 10 strike the forward ends of the stops or:cushions 18. Thiswill bring'the slots 12-of the e'ars 11 into position to slide down over the pivots 15 into the position "copies orthis patent may be obtained for five cents each, by addressing the cannot now be removed without tipping it forwardly again, for if it is raised while at the angle indicated in full lines in Fig. 4, the stops 13 will strike against the plate 14. This would, however, release the cars 11 from the pivots 15 and the stops 13 may now again be released from the plates 14 by tipping the seat forwardly through a small angle when it may again be withdrawn. It

In this position, the ends of the cars 11 beyond the slots 12 form tongues lying under the pivots 15 in such manner as to lock the seat to the chair frame.

I do not wish to be limited to the details of construction shown and described, as changes may be made within the scope of the appended'claim without departing from the spirit o'f-the invention; but

.What I claim as new and desire to secure by Letters. Patent is:

A chair including a pair of side frames, a vertically disposed member spaced from the inner side of each side frame, and having a flangeclosing said space along the front and bottomthereof, a pivot pin extending across the space between each side frame and'memher, seat supporting 'members having vertically disposed depending ears adapted to be received within said spaces, each of said ears having a slot extending forwardly fro'mits rear edge for engagement with a pivot pin, and means comprising laterally extending lugs on the rear ends of said seat supporting members, adapted to engage the bottom flanges of-said verticallydisposed members, for preventing withdrawal of the seat by movementin the plane of its folded position, when said slots have been raised free of said pivot pins.

Dated-this 28th dayof Oct., 1912.

CALVIN H. HILL.

Witnesses:

BENJAMIN F. LOGAN, FRANK A. MCKEE.

"Commissioner of latentl,

Washington, D. 0. 

